Research on the stability of metal nanoclusters and their molecular/supramolecular chemistry has proceeded significantly independently thus far. We herein have demonstrated that the stability of a nanocluster-based system should be assessed from both the cluster individual aspect (, the energy of the molecular conformer) and the cluster collective aspect (, the energy of the supramolecular lattice). A pair of AuCu cluster polymorphs, including AuCu-triclinic and AuCu-trigonal, was developed here to reveal the energy and stability contributions of both cluster conformers and crystalline lattices to their total systems. This work hopefully promotes a comprehensive understanding of the stability of cluster-based nano-systems which is beneficial for their downstream applications.
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http://dx.doi.org/10.1039/d4nr01748j | DOI Listing |
Chem Rec
January 2025
Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
In recent times, chemical looping offered a sustainable alternative for upgrading light hydrocarbons into olefins. Olefins are valuable platform chemicals that are utilized for diverse applications. To close the wide shortfall in their global supply, intensified efforts are ongoing to develop on-purpose production technologies.
View Article and Find Full Text PDFACS Catal
January 2025
School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
Partial oxidation of ethylene over silver catalysts produces more than 30 million metric tons of ethylene oxide (EO) annually. However, the form of active silver surfaces, reactive oxygen species, and dominant pathways of this chemical reaction remains controversial despite decades of research. Here, we use Raman spectroscopy and transient kinetic measurements to demonstrate that higher coverages of peroxide species, present only upon Ag oxide surfaces that form , correlate with greater selectivities to EO.
View Article and Find Full Text PDFFront Nutr
January 2025
Ethiopian Institute of Agricultural Research, Head Quarter, Food Science and Nutrition Research, Addis Ababa, Ethiopia.
Background: It is well known that deterioration is a big concern in the food supply chain. The problem is more serious in handling of traditional foods in developing country such as Ethiopia, due to the limited knowledge about the optimum processing, packaging and storage conditions.
Objective: This study aimed to investigate the effect of packaging material and storage condition on the shelf life of Ethiopian traditional paste.
Phys Chem Chem Phys
January 2025
School of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China.
The hydrogenation of bicarbonate, a byproduct of CO captured in alkaline solutions, into formic acid (FA) using glycerol (GLY) as a hydrogen source offers a promising carbon-negative strategy for reducing CO emissions. While Pd-based catalysts are effective in this reaction, they often require high temperatures, leading to low FA yield due to strong hydrogen adsorption on Pd surfaces. In this work, metal-organic framework derived N-doped carbon encapsulated CoNi alloy nanoparticles (CoNi@NC) were prepared, acid-leached, and employed as a support to modulate the electronic structure of Pd-based catalysts.
View Article and Find Full Text PDFChem Commun (Camb)
January 2025
College of Physics, Qingdao University, Qingdao 266071, China.
A polyvinylidene carbonate:BN layer was constructed between LiAlTi(PO) (LATP) and the lithium (Li) electrode, improving interfacial compatibility and thermal stability. The LiN-rich solid electrolyte interphase regulates Li deposition behaviors. The solid-state Li metal batteries (SSLMBs) show remarkable electrochemical performance, exhibiting endurance for 800 hours of cycling at 0.
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